EP3402711B1 - Trailer towing assistant for tight spot reversal - Google Patents

Trailer towing assistant for tight spot reversal Download PDF

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Publication number
EP3402711B1
EP3402711B1 EP17703513.6A EP17703513A EP3402711B1 EP 3402711 B1 EP3402711 B1 EP 3402711B1 EP 17703513 A EP17703513 A EP 17703513A EP 3402711 B1 EP3402711 B1 EP 3402711B1
Authority
EP
European Patent Office
Prior art keywords
trailer
vehicle
maneuvers
travel
recorded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17703513.6A
Other languages
German (de)
French (fr)
Other versions
EP3402711A1 (en
Inventor
Brandon HERZOG
Jeremy Mcclain
Ibro MUHAREMOVIC
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive Systems Inc
Original Assignee
Continental Automotive Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Systems Inc filed Critical Continental Automotive Systems Inc
Publication of EP3402711A1 publication Critical patent/EP3402711A1/en
Application granted granted Critical
Publication of EP3402711B1 publication Critical patent/EP3402711B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18036—Reversing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D13/00—Steering specially adapted for trailers
    • B62D13/06—Steering specially adapted for trailers for backing a normally drawn trailer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/027—Parking aids, e.g. instruction means
    • B62D15/0285—Parking performed automatically
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/0088—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot characterized by the autonomous decision making process, e.g. artificial intelligence, predefined behaviours
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/02—Control of position or course in two dimensions
    • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0212—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2300/00—Indexing codes relating to the type of vehicle
    • B60W2300/14—Trailers, e.g. full trailers, caravans
    • B60W2300/145—Semi-trailers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/30—Driving style
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2556/00—Input parameters relating to data
    • B60W2556/10—Historical data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/22—Articulation angle, e.g. between tractor and trailer

Definitions

  • the present disclosure relates to automotive vehicles and more particularly to advance driver assistance systems for automotive vehicles.
  • a trailer is typically connected to a towing vehicle through a trailer hitch.
  • the trailer hitch allows the trailer to swivel around the hitch horizontally so that the vehicle-trailer unit is able to move around corners.
  • a vehicle-trailer unit turns the trailer follows a shorter path than the vehicle. The longer the wheel-base is, the shorter the path the trailer wheels take during a turn, i.e. the turning radius of the trailer is decreased. To compensate for the short turning path the vehicle-trailer unit must make wider turns. Those unaccustomed to operating vehicle-trailer units may have some difficulty in accurately controlling the path of the trailer.
  • the difficulty of maneuvering a vehicle-trailer unit is compounded when the vehicle-trailer unit is traveling in the reverse. When the vehicle backs up, it pushes the trailer. Drivers are often confused as to which way to turn the vehicle steering wheel to get the desired change of direction of the trailer. Applying an incorrect steering angle in the vehicle may also cause the trailer to jack-knife and lose its course or otherwise maneuver the vehicle-trailer unit into a situation which they do not know how to exit.
  • Document GB 2 493 430 A describes an assistance apparatus for driving in narrow spaces, comprising an electronic control unit configured with instructions to record a plurality of maneuvers of the vehicle-trailer unit as each maneuver is executed in an original direction of travel, retrieve the recorded plurality of maneuvers response to an initiating of a tight spot reversal feature, and instruct vehicle systems to perform the retrieved recorded plurality of maneuvers in the order and direction of travel in which they were recorded.
  • Document EP 0 849 144 A2 describes an automatic steering apparatus for vehicles.
  • a method of controlling a vehicle-trailer unit includes recording, with an electronic control unit for a trailer assist system, a plurality of maneuvers of the vehicle-trailer unit as each maneuver is executed in an original direction of travel.
  • the method also includes retrieving the recorded plurality of maneuvers in response to an initiating of a tight spot reversal feature for the trailer assist system.
  • the method further includes instructing vehicle systems to perform the retrieved recorded plurality of maneuvers in the reverse order and direction of travel in which they were recorded until the trailer assist system determines that the vehicle-trailer unit is in a situation where continued travel in the original direction is possible.
  • a trailer assist system for a vehicle-trailer unit includes an electronic control unit.
  • the electronic control unit is configured with instructions to record a plurality of maneuvers of the vehicle-trailer unit as each maneuver is executed in an original direction of travel, retrieve the recorded plurality of maneuvers response to an initiating of a tight spot reversal feature, and instruct vehicle systems to perform the retrieved recorded plurality of maneuvers in the reverse order and direction of travel in which they were recorded until the trailer assist system determines that the vehicle-trailer unit is in a situation where continued travel in the original direction is possible.
  • FIG. 1 is a schematic diagram of a vehicle and trailer assembly having a trailer backing system of the present invention.
  • Figure 1 illustrates a vehicle 10 and a trailer 11.
  • the vehicle 10 may be a car, truck, tractor, etc.
  • the trailer 11 is controllably secured to the vehicle 10 to form a vehicle-trailer unit 12.
  • the vehicle-trailer unit 12 utilizes a trailer assist system 14 of the present invention.
  • the trailer assist system 14 includes an electronic control unit (ECU) 22.
  • the ECU 22 records the maneuvers of the vehicle-trailer unit 12.
  • the ECU 22 may be able to communicate with other vehicles systems 24, such as steering and breaking systems.
  • the ECU 22 may send instructions to the other systems 24 for maneuvering the vehicle-trailer unit 12, and/or may received signals from the systems 24 to record the maneuvers of the vehicle-trailer unit 12 as input by a vehicle operator.
  • the trailer assist system 14 may also be used to assist in backing the vehicle-trailer unit 12.
  • the ECU 22 may also determine the steering and/or braking necessary to move the vehicle-trailer unit 12 through desired backing maneuvers and send signals with instructions for completing the calculated maneuvers to other vehicles systems 24.
  • the vehicle operator When operating vehicle-trailer units 12, in forward towing or in reverse backing situations, the operator may find themselves in a "tight spot" situation where continued travel in the current direction, either forward or reverse, is no longer possible due to nearby obstacles and the likelihood of a collision. In such tight spot situations, the vehicle operator must maneuver in the opposite direction to extract the vehicle-trailer unit 12 from the tight spot. However, maneuvering the vehicle-trailer unit 12 in the opposite direction to extract from the tight spot can be just as difficult or more difficult for the vehicle operator than the original movements. In such as situation, the vehicle operator may activate the trailer assist system 14 to initiate a tight spot reversal feature 16.
  • the ECU 22 may retrieve the recorded maneuvers of the vehicle-trailer unit 12 and instruct the vehicle-trailer unit 12 to perform those maneuvers in the reverse order in which they are executed.
  • the recorded maneuvers may include direction of travel (e.g., current transmission gear), distance of movement, steering angle, etc. This is illustrated by line 26 showing the path of the original maneuvers of the vehicle-trailer unit 12 and the path which the vehicle-trailer unit 12 travels in the reverse direction during the tight spot reversal to return to the original position 27.
  • the trailer assist system 14 may perform a preset number of maneuvers in the reverse order at a time, e.g., the last three recorded maneuvers.
  • the ECU 22 may perform one movement at a time in the reverse order. The vehicle operator may continue requesting the trailer assist system 14 to perform maneuvers in the reverse order until the operator deems the vehicle-trailer unit 12 in a situation where the operator is comfortable to continue travel in the original direction.
  • the trailer assist system 14 performs the maneuvers in the reverse order until the trailer assist system 14 determines that the vehicle-trailer unit 12 in a situation where continued travel in the original direction is possible.
  • the trailer assist system 12 may use information from other vehicle systems 24, sensors and cameras to locate nearby obstacles 48 and confirm clearance from those obstacles 48 for travel in the original direction is possible.
  • the ECU 22 may calculate a new series of maneuvers to reverse the vehicle-trailer unit 12 from the tight spot.
  • the new series of maneuvers may not be a replica of the last movements of the vehicle-trailer unit 12, rather the new series of maneuvers may be an efficient extraction of the vehicle-trailer unit 12 from the tight spot situations.
  • This is illustrated by line 28, which moves the vehicle-trailer unit 12 from the tight-spot at 29 to a new position. From the new position the vehicle-trailer unit 12 may take another maneuver path 30 to more easily pass through the obstacles 48.
  • the tight spot reversal feature 16 of the trailer assist system 14 can maneuver the vehicle-trailer unit 12 out of a situation where an operator cannot or does not know how to continue movement in the current direction of travel, thus allowing them to try again.

Description

    TECHNICAL FIELD
  • The present disclosure relates to automotive vehicles and more particularly to advance driver assistance systems for automotive vehicles.
    • BACKGROUND
  • A trailer is typically connected to a towing vehicle through a trailer hitch. The trailer hitch allows the trailer to swivel around the hitch horizontally so that the vehicle-trailer unit is able to move around corners. When a vehicle-trailer unit turns the trailer follows a shorter path than the vehicle. The longer the wheel-base is, the shorter the path the trailer wheels take during a turn, i.e. the turning radius of the trailer is decreased. To compensate for the short turning path the vehicle-trailer unit must make wider turns. Those unaccustomed to operating vehicle-trailer units may have some difficulty in accurately controlling the path of the trailer.
  • Additionally, the difficulty of maneuvering a vehicle-trailer unit is compounded when the vehicle-trailer unit is traveling in the reverse. When the vehicle backs up, it pushes the trailer. Drivers are often confused as to which way to turn the vehicle steering wheel to get the desired change of direction of the trailer. Applying an incorrect steering angle in the vehicle may also cause the trailer to jack-knife and lose its course or otherwise maneuver the vehicle-trailer unit into a situation which they do not know how to exit.
  • Document GB 2 493 430 A describes an assistance apparatus for driving in narrow spaces, comprising an electronic control unit configured with instructions to record a plurality of maneuvers of the vehicle-trailer unit as each maneuver is executed in an original direction of travel, retrieve the recorded plurality of maneuvers response to an initiating of a tight spot reversal feature, and instruct vehicle systems to perform the retrieved recorded plurality of maneuvers in the order and direction of travel in which they were recorded.
  • Document EP 0 849 144 A2 describes an automatic steering apparatus for vehicles.
  • The background description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure.
    • BRIEF SUMMARY
  • According to the invention, a method of controlling a vehicle-trailer unit includes recording, with an electronic control unit for a trailer assist system, a plurality of maneuvers of the vehicle-trailer unit as each maneuver is executed in an original direction of travel. The method also includes retrieving the recorded plurality of maneuvers in response to an initiating of a tight spot reversal feature for the trailer assist system. The method further includes instructing vehicle systems to perform the retrieved recorded plurality of maneuvers in the reverse order and direction of travel in which they were recorded until the trailer assist system determines that the vehicle-trailer unit is in a situation where continued travel in the original direction is possible.
  • Further according to the invention, a trailer assist system for a vehicle-trailer unit includes an electronic control unit. The electronic control unit is configured with instructions to record a plurality of maneuvers of the vehicle-trailer unit as each maneuver is executed in an original direction of travel, retrieve the recorded plurality of maneuvers response to an initiating of a tight spot reversal feature, and instruct vehicle systems to perform the retrieved recorded plurality of maneuvers in the reverse order and direction of travel in which they were recorded until the trailer assist system determines that the vehicle-trailer unit is in a situation where continued travel in the original direction is possible.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The present disclosure will become more fully understood from the detailed description and the accompanying drawings, wherein:
    FIG. 1 is a schematic diagram of a vehicle and trailer assembly having a trailer backing system of the present invention.
    • DETAILED DESCRIPTION
  • The following description is merely exemplary in nature and is in no way intended to limit the disclosure, its application, or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. Figure 1 illustrates a vehicle 10 and a trailer 11. The vehicle 10 may be a car, truck, tractor, etc. The trailer 11 is controllably secured to the vehicle 10 to form a vehicle-trailer unit 12. The vehicle-trailer unit 12 utilizes a trailer assist system 14 of the present invention.
  • The trailer assist system 14 includes an electronic control unit (ECU) 22. The ECU 22 records the maneuvers of the vehicle-trailer unit 12. The ECU 22 may be able to communicate with other vehicles systems 24, such as steering and breaking systems. The ECU 22 may send instructions to the other systems 24 for maneuvering the vehicle-trailer unit 12, and/or may received signals from the systems 24 to record the maneuvers of the vehicle-trailer unit 12 as input by a vehicle operator.
  • The trailer assist system 14 may also be used to assist in backing the vehicle-trailer unit 12. In such instances, the ECU 22 may also determine the steering and/or braking necessary to move the vehicle-trailer unit 12 through desired backing maneuvers and send signals with instructions for completing the calculated maneuvers to other vehicles systems 24.
  • When operating vehicle-trailer units 12, in forward towing or in reverse backing situations, the operator may find themselves in a "tight spot" situation where continued travel in the current direction, either forward or reverse, is no longer possible due to nearby obstacles and the likelihood of a collision. In such tight spot situations, the vehicle operator must maneuver in the opposite direction to extract the vehicle-trailer unit 12 from the tight spot. However, maneuvering the vehicle-trailer unit 12 in the opposite direction to extract from the tight spot can be just as difficult or more difficult for the vehicle operator than the original movements. In such as situation, the vehicle operator may activate the trailer assist system 14 to initiate a tight spot reversal feature 16.
  • In operation of the tight spot reversal feature 16, the ECU 22 may retrieve the recorded maneuvers of the vehicle-trailer unit 12 and instruct the vehicle-trailer unit 12 to perform those maneuvers in the reverse order in which they are executed. The recorded maneuvers may include direction of travel (e.g., current transmission gear), distance of movement, steering angle, etc. This is illustrated by line 26 showing the path of the original maneuvers of the vehicle-trailer unit 12 and the path which the vehicle-trailer unit 12 travels in the reverse direction during the tight spot reversal to return to the original position 27.
  • In an example, the trailer assist system 14 may perform a preset number of maneuvers in the reverse order at a time, e.g., the last three recorded maneuvers. Alternatively, in another example, the ECU 22 may perform one movement at a time in the reverse order. The vehicle operator may continue requesting the trailer assist system 14 to perform maneuvers in the reverse order until the operator deems the vehicle-trailer unit 12 in a situation where the operator is comfortable to continue travel in the original direction.
  • Alternatively, according to the invention, the trailer assist system 14 performs the maneuvers in the reverse order until the trailer assist system 14 determines that the vehicle-trailer unit 12 in a situation where continued travel in the original direction is possible. In such situations the trailer assist system 12 may use information from other vehicle systems 24, sensors and cameras to locate nearby obstacles 48 and confirm clearance from those obstacles 48 for travel in the original direction is possible.
  • In another example of employing the tight spot reversal feature 16, the ECU 22 may calculate a new series of maneuvers to reverse the vehicle-trailer unit 12 from the tight spot. In this example, the new series of maneuvers may not be a replica of the last movements of the vehicle-trailer unit 12, rather the new series of maneuvers may be an efficient extraction of the vehicle-trailer unit 12 from the tight spot situations. This is illustrated by line 28, which moves the vehicle-trailer unit 12 from the tight-spot at 29 to a new position. From the new position the vehicle-trailer unit 12 may take another maneuver path 30 to more easily pass through the obstacles 48.
  • In this manner the tight spot reversal feature 16 of the trailer assist system 14 can maneuver the vehicle-trailer unit 12 out of a situation where an operator cannot or does not know how to continue movement in the current direction of travel, thus allowing them to try again.
  • While the best modes for carrying out the invention have been described in detail the true scope of the disclosure should not be so limited, since those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention within the scope of the appended claims.

Claims (6)

  1. A method of controlling a vehicle-trailer unit (12) comprising:
    recording with an electronic control unit (22) for a trailer assist system (14) a plurality of maneuvers of the vehicle-trailer unit (12) as each maneuver is executed in an original direction of travel;
    retrieving the recorded plurality of maneuvers in response to an initiating of a tight spot reversal feature for the trailer assist system (14); and
    instructing vehicle systems (24) to perform the retrieved recorded plurality of maneuvers in the reverse order and direction of travel in which they were recorded until the trailer assist system (14) determines that the vehicle-trailer unit (12) is in a situation where continued travel in the original direction is possible.
  2. The method of claim 1, wherein each of the recorded plurality of maneuvers includes direction of travel, distance of movement, and steering angle.
  3. The method of claim 1, wherein instructing vehicle systems (24) to perform the retrieved recorded plurality of maneuvers further comprises performing one of the plurality of maneuvers at a time.
  4. A trailer assist system (14) for a vehicle-trailer unit (12), comprising:
    an electronic control unit (22) configured with instructions to
    record a plurality of maneuvers of the vehicle-trailer unit (12) as each maneuver is executed in an original direction of travel,
    retrieve the recorded plurality of maneuvers response to an initiating of a tight spot reversal feature, and
    instruct vehicle systems (24) to perform the retrieved recorded plurality of maneuvers in the reverse order and direction of travel in which they were recorded until the trailer assist system (14) determines that the vehicle-trailer unit (12) is in a situation where continued travel in the original direction is possible.
  5. The system (14) of claim 4, wherein each of the recorded maneuvers includes direction of travel, distance of movement, and steering angle.
  6. The system (14) of claim 4, wherein the electronic control unit (22) is further configured with instructions to instruct vehicle systems (24) to perform the recorded plurality of maneuvers one at a time.
EP17703513.6A 2016-01-14 2017-01-13 Trailer towing assistant for tight spot reversal Active EP3402711B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662278903P 2016-01-14 2016-01-14
PCT/US2017/013344 WO2017123876A1 (en) 2016-01-14 2017-01-13 Trailer towing assistant for tight spot reversal

Publications (2)

Publication Number Publication Date
EP3402711A1 EP3402711A1 (en) 2018-11-21
EP3402711B1 true EP3402711B1 (en) 2020-07-29

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EP17703513.6A Active EP3402711B1 (en) 2016-01-14 2017-01-13 Trailer towing assistant for tight spot reversal

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US (1) US11072330B2 (en)
EP (1) EP3402711B1 (en)
JP (1) JP6895979B2 (en)
WO (1) WO2017123876A1 (en)

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Also Published As

Publication number Publication date
US11072330B2 (en) 2021-07-27
WO2017123876A1 (en) 2017-07-20
JP6895979B2 (en) 2021-06-30
JP2019509203A (en) 2019-04-04
US20180319401A1 (en) 2018-11-08
EP3402711A1 (en) 2018-11-21

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